In Star Wars: The Force Awakens, audiences were briefly introduced to the Knights of Ren, a shadowy group that rose up in the years after Return of the Jedi and served the equally mysterious Supreme Leader Snoke. The villainous Kylo Ren (Adam Driver) counted himself among their ranks, and though we don’t know much about them, what we can infer is pretty terrible based on their association with the onetime Ben Solo. There’s apparently lots more to learn about the Knights,...